Thermostatic mechanism.



B. El -GOLD.

THBRMOSTATIG MECHANISM. APPLICATION FILED 1530.10, 1909 1,077,224. Patented Oct. 28, 1913.

um- I INVENTOR WITNESSES: e

V E. E. GOLD. THEBMOSTATIO MECHANISM.

APPLICATION FILED DEC. 10, 1909.

1,077,224. Paten ted 061.28, 1913.

- INVENTOR '1 WITNESSES: W

B.B.GOLD.

THBEMOSTATIG MECHANISM.

APPLIQATIDN FILED DEO.'10. 1909.

1,077,224. Patented 0ct.2 8,1913. I

3 SHEETS-SHEBT 3.

INVENTOR ZM 54i,

M HJ /I/ZO hays, I @MW/ UNITED STATES PATENT oFrroa.

EDWARD E. GOLD, OF YORK, N. Y., ASSIGNOR T0 GOLD CAB HEATING & LIGHTING COMPANY, OF NEW YORK, N. Y.

THERMOSTATIC MECHAN ISM.

A CORPORATION OF NEW YOK Specification of Letters lfatent.

Patented 0a. 28, 1913.

Application file'd December 10, 1909. Serial No. 532,369.

To all whom it may concern:

Be it known'that I, Epwana E. Gone, a citizen of the United States, residing in the borough of Manhattan, cit county, and State'of New York, have invented certain new and useful Improvements in Thermo static Mechanism, of which the following is a specification.

This invention aims to provide an improved thermostatic mechanism of general application and which is specially useful in heating systems and apparatus for the steam heating of railway cars.

With this invention the system may be arranged to work automatically as a pressure system, or to work automatically as a vapor system (at approximately atmospheric or lower pressure) being set at will andjby'a very simple operation to work according to either principle as desired.

The apparatus is applicable also to other fields than the heating of railway cars; and contains features and combinations which are separately valuable as hereinafter claimed.

The accompanying embodiment of the invention.

Figure 1 is. a diagrammatic perspective of the system applied to the heating of a railway car; Figs. 2 and 3 are horizontal sections of the controlling mechanism; Fig. t is a section approximately on'the line 4 1 of Fig. 3; Fig. 5 is a vertical longitudinal section through the thermostatically controlled mechanism approximately on the line 55 Fig. 3. f

Referring to the embodiment of the invention illustrated, A is the train-pipe carrying the supply of steam to the several cars. It is provided beneath the floor B of the car with a pair of branches C, one-running to each side of the car, and each connected by a vertical branch D passing through the floor of the car, and a horizontal branch E with the radiator F. A hand-operated stop-valve G is arranged within the car for use when the supply of steam is to be cut off entirely from the radiator. In the horizontal branch C below the floor of the car is an automatic'admission valve indicated as a whole by the letter H. This valve may be automatically controlled by thermostatic mechanism in a casing J, in which also is the discharge valve to which the discharging steam -and water drawings illustrate an of condensation are led through the incllned branch K within the car, the vertical branch L passing through the floor of the car and the horizontal branch M beneath the car The controlling mechanism in the casing J is manipulated by means of a vertical shaft N passing upward through the floor ofthe car, and provided within the car with a handle N by which it can be turned about 180"degrees.' The handle N for example may be located near or set down into 'the'floor of the car and surrounded by a ring'N the handle carrying apointer and the ring a pair of marks to indicate the pressure and no-pressure positions. When the handle is turned in one position the systein operates under pressure. lVhen the handle is turned in theopposite position the system operates as a vapor system.

Within the casing J of the regulating apparatus 'is a thermostat comprising, in this case, a vessel '0 of sheet metal carrying ether or other highly volatile liquid adapted to be vaporized and to expand the walls of the vessel when a suiticient temperature is applied thereto. The discharge valv P closes against a seat Q which is fasten d in one end of the casing J, and which is fastened also to the discharge pipe M 0 the radiator. The discharge'yalve Pi is pro vided with an extension R adapted to be engaged by one of the flat walls of the thermostat and to transmit the movement of said wall to the valve. The valve tends normally to assumelan' open position under the expansion of a helicoidal spring S. The

admission valve proper T is provided with a similar helicoidal spring U tending 'to hold the valve normally open. A stem V of the valve extends into the casing J and is provided there with a head W adapted to engage the opposite flatface of the thermostat and to transmit the motion thereof to the valve. The stem V of the admission valve passes through the head of the valve casing, to which is connected by four tappet screws or in any other suitable way, a ring having a spider or a set of arms Y connected with the casing J, so that the casing J of the regulating apparatus, the admission valve and its seat, and the discharge valve and its seat, are held to gether in a unitary structure which can be readily applied 'upon existing systems by merely intercalating the admission valve in the horizontal admission branch, and con;

' necting the discharge pipe of the system leaves the part R free. in the first case the discharge valve is held fixedly open. and the admission valve is opened or closed by the expansion or contraction of the thermostat so asto regulate the uantity of steam admitted and, sup osing the thermostatic liquid to he va orized as soon as any steam passes through the discharge port, convert- .ing the,.system into one in which the qna. tity olsteam admitted is limited to only such a quantity as will be condensed in the radiator and discharge pipes. In the secend position (Fig. 2) the'admission valve is held fixedly open and the discharge valve is free, so that the system is converted into an ordinary pressure system in which when the steam escapes at the discharge there is an expansion of the thermostat and a closing of the discharge valve for a sufficient length of time to permit the accumulation {of a small quantity of water of condensa -tion, whereupon the cooling of the thermostat permits the discharge valve to reopen and discharge the water of condensation, which is followed steam which closes the valve again as; before. The movements above described are transmitted from the reversing shaft N by means of an eccentric Z carried on the lower end thereotwithin the casing. This eccentricactuates the head W of the admission valve spindle V directly, being arranged. in a vertical ,opening through said head, and whichfopcrr lIlQ' is of a Width slightly greater than the diameter of the eccentric. Thus when the eccentric is in the position of Fig. 2 it holds the admission valve wide open. When the eccentric is in the opposite position (Fig. 3) the admission valve is released, and by reason of the play between the eccentric and the opening in the head 'W, the admission valve may be closed the expansion of the thermostat. The discharge valve is controlled by similarly holding or releasing head R. For thispnrpose an oblong ring a is arranged in a plane transverse to that of the thermostatic vessel l) and surround ing the latter, and transmits the movement of the eccentric to the head it of ti haust valve. At points in line with the newness.

of the thermostat ill-E ring a divided so as to form smaller rings, 5), c, at the opposite sides respectively, and which smaller rings are parallel with. the thermostat. The ring I) surrounds a iiange on the head it :of the discharge valve, so that when the ring ct isshi'tted to the left it holds this head it stationary. The ring 0 passes about the head W and is provided with slots above and below the head W and in which the eccentric Z fits (Fig. 5). Now when the eccentrics are in the position of Fig. 2, besides holding the admission valve fixedly open, they release the head it from control by the ring a; and in the position of Fig. 3 the ring a is shifted to the left to bring the ring i) against the flange of the head It so as to hold the discharge valve fixedly open, the admission valve being freed as previously explained. The horizontal ring a is supported at opposite sides upon lugs c'on the side walls of the casing l.

1. Fo'r 'the vpurpose olrendcring the operation of thettrap more readily responsive to the conditions the outside atmosphere, so that it will contract promptly after having been expanded to cutoil the steam, the easing is arranged to induce a current of air in. contact with the thermostatic vessel. The arrangement of the parts is similar to that shown in my Patent No. 507,268 of @ctober 24, 1893, and others, relating to thcrmostatic steam traps. The discharge of the water of condensation and any escaping steam is by way oi the valve P, whence'the steam is conducted to the face of the thermostatic vessel and the Water runs off throagh an opening f in the bottom o'lt the casing. This'saine opening admits air for ventilation or quick cooling of the thermostat. The top and bottom of the casing are provided withiugs g which serve to hold the l I l thermostat against displacement in a veroasing 1S- tica-l plane, The bottom. ii of hinged at one side and provide .vith;a-. link and eccentric lock 3 at the opposite side, so that, the casing may be readily opened introduction and removal of the several The inside line of the bottom it is shown in Fi s. 2 and passing between the opening f and the support for the foot of the reversing shaft N. The air which enters the opening f passes out at the (upper part of the hack of the casing through an torincluding anae devices adapted tobe actuated thereby, said -2.-'A thermostatic mechanism including in combination a thermostat, and mechanism iforalternatively providing. different, sub stantially unyielding, reaction abutments for said thermostat,' and for alternately utilizing the action of said thermostat in the directions opposite to the abutments.

3. A thermostatic mechanism including in combination a'thermostat, a pair of bodily movable devices, .means for pressing said devices yieldingly against opposite sides of said thermostat, and means for holding one of said devices against the thermostat and preventing its bodily movement, and leaving the other free to receive the expansive movement of the thermostat.

4. A thermostatic mechanism including in combination a thermostat, a motion-trans mitting device ateach side of said thermostat, and means for .holding at will either of said devices fixed and leaving the other free to transmit the movement of the thermostat. i v

5. A thermostatic mechanism includi g in combination a thermostat, a motion-transmitting device at each side of said thermostat, a ring' passing about said thermostat and engaging one of said devices and'a reversing means'acting on said ring and the other of said'devices to alternatively hold one of said devices fixed against the thermostat and leave the other free to transmit the movement of the thermostat.

6. A thermostatic mechanism including in combination-a floating thermostatic vessel-having opposite sides adapted toexpand outward, and means for providing fixed abutments alternatively upon the opposite side. faces of said vessel so as to cause the entire expansion to take placei-n the opposit-e. direction.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

' EDWARD E. GOLD. \Vitnesses:

' D. ANTHONY Usnm, FRED WHITE. 

